Question about Intermatic WH40 - Water Heater Time Switch - NEMA 1 Indoor Steel Case - DPS

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Manual lever setting for water heater timer

I don't know which way to set the manual lever - to on or off - so that the timer works. Intermatic Little Grey Box water heater timer.

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Post a close up of the timer and i will tryto assist you.
normally it dosent matter where the lever is as it should reset itself after each comlete operation . ie if you turn it on it should turn off when it reaches a preset off cam pin. or position indicator lever.

Posted on Nov 29, 2008

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The manual switch does not engage, found a wire spring in the box?


1) Copy following links:
http://waterheatertimer.org/images/WH-Off-pin-clip-washer-600.jpg
http://waterheatertimer.org/images/WH-lever-001-400.jpg
http://waterheatertimer.org/How-to-troubleshoot-Intermatic-timer.html

2) Examining the WH40 in my office, there is a clip washer that holds override lever in place against timer body.
This might be considered V-shaped spring.
Buy at local hardware store

3) Add comment and say what you discover, and attach photo

Feb 01, 2013 | Intermatic WH40 - Water Heater Time Switch...

1 Answer

I have an Intermatic WH-40 timer set up on swimming pool pump. I am not using any start/stop mechanical pieces on the dial face. Yet my pump does shut off everyday for short time period. Why is this...


Sounds like pump issue or loose wire and not the timer.
Check wiring at pump. Read pump manual. The pump may have overheat cycle that trips off and then comes back on to protect pump without requiring owner to press reset button each time.

If timer turns OFF, then the manual override lever moves to the off position, and when timer turns ON again, the override lever moves to the on position. If override lever is moving without a tripper, then I would like to know more about that. Add a comment with photo posted on Flickr.

Same with the circuit breaker. The circuit breaker switch does not trip and reset once a day.

A loose wire could cause occasional connect-reconnect.
Check terminals inside timer for signs of high heat and burning. Check that insulated part of wire is not under the screw-down-plate.
http://waterheatertimer.org/How-to-troubleshoot-Intermatic-timer.html#plate

Check circuit breaker for signs of burning and smell of electrical burning and sound of shorting on the busbar.

Upvote the help.
And take advantage of fixya expert assistance live.
For a price, expert works with you while you work on timer or any do-it-yourself project.
Fixya is always less expensive than a service call.

May 31, 2011 | Intermatic WH40 - Water Heater Time Switch...

1 Answer

I have installed a new adjustable thermostat unit (E1-BCANRT1W). Temp is set at 91 deg and I am using the timer. Two time periods are set and the switch is set to timer (not ON). The unit comes on at...


Double check your slide switch.
For timer: set switch to TIMER
For thermostat: set switch to ON
If slide switch does not operate, then Autocirc may be defective

Laing (800) 554-6853
http://waterheatertimer.org/pdf/Laing-E1-E3-E10-install-instructions.pdf
http://waterheatertimer.org/pdf/Auto-circ-manual.pdf
http://waterheatertimer.org/Water-heater-recirculation-system.html

1) Household AC wiring will not affect the timer.
You can check your outlet using cheap circuit analyzer from home center.
The clock rotates one direction and the pins push small lever down which turns motor on-off.
When the OFF pins pass, the small lever snaps back and the motor turns ON.

I cannot immediately find operation manual for the E-1 model.
Typical ACT303 auto circ manual says following:

2) If timer controlled operation is desired, set timer and move slide switch to TIMER:
Manual says: tabs/pins are outward for ON times.
Another sentence says UPWARD, so I don't know which way the pins are set for sure.
So if you want timer ON for 2 hours, you would set 4 consecutive pins outward or upward.
ON for 6 hours, set 12 consecutive pins outward or upward.
If the timer turns ON in reverse of instructions, then set the pins that way.
Autocirc does not make the timer, they buy timer modules from clock-makers like Grasslin, Intermatic, etc.

3) To operate Autocir thermostatically without the timer, slide switch to ON position.
The clock dial will continue rotating

Apr 14, 2011 | Laing Thermotech Autocirc Undersink...

1 Answer

I need the little pins to set timer. Renter took them off. MK


The part number for those is:

156T1978A

They should be available thru local hardware sources and of course online if you so choose.

John

Jan 19, 2011 | Intermatic WH40 - Water Heater Time Switch...

1 Answer

Timer will not turn water heater ON at set time, has to be done manually. However, it will turn water heater OFF at set time.


If this is new installation, check wiring. Hot and Load wires might be reversed.
Check that ON OFF trippers are both attached to yellow dial.
http://waterheatertimer.org/How-to-wire-WH40.html

If timer worked fine before, and started missing recently, then tripper pins probably worn out.
Trippers contact mechanical lever, and push lever on-and-off.
Trippers are softer metal and designed to wear out before lever.
If lever is worn out, timer needs to be replaced, but try new trippers first.
Buy trippers at Grainger
http://www.grainger.com/Grainger/INTERMATIC-Timer-Tripper-2E054?Pid=search
http://www.grainger.com/Grainger/timer-accessories/timers/electrical/ecatalog/N-8hi

How WH40 timer works:
Clock motor rotates dial.
ON-OFF trippers on dial contact lever.
ON tripper pushes lever one direction.
OFF tripper pushes lever other direction.
Lever moves electrical contacts together, or pulls contacts apart.
When lever moves on-and-off, manual override lever also snaps back and forth with audible clicking sound.

Using q-tip, add touch of white grease to lever where trippers contact.

geno_3245_110.jpg

Nov 25, 2010 | Intermatic WH40 - Water Heater Time Switch...

1 Answer

Help! I can't get the water heater to go on! I KEEP TRYING to set the dial, but it's not working


If I understand correctly, you have the WH40 water heater timer.

If timer dial will not rotate, then use manual override to turn on circuit to water heater.
If manual override will not move back and forth, the tripper pin might be wedged against the lever.
Lift and rotate dial out of way.
If manual override does not click back-and-forth, then timer is probably bad.
If manual override clicks, but water heater does not turn on, then check electricity.

If you need more help, post a comment and I will respond

Oct 28, 2010 | Intermatic WH40 - Water Heater Time Switch...

1 Answer

New Intermatic WH40 electric water heater timer for solar


make sure your line wire is on the correct connection seems to be connected to the off going contact. then the clockmotor runs only if timer is switched on. to be sur there is a diagram on electricsuppliesonline.com, search/shop by brand, intermatic. good luck

Dec 27, 2009 | Intermatic WH40 - Water Heater Time Switch...

1 Answer

Clock on Intermatic WH40 Timer Switch does not rotate


Timers are a waste of time . I would disconnect it and get rid of it. Water heaters nowadays are so energy efficient and the thermostats take care of when it heats and shuts off. Your timer might save you pennies a year!

Feb 27, 2009 | Intermatic WH40 - Water Heater Time Switch...

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